Blue light glasses are sold everywhere, whether in pharmacies or online. They promise to ease eye strain, protect your eyes from screens, and help you sleep better at night. But do they actually work? The answer might surprise you.
What Is Blue Light?
Blue light is a type of light with a short wavelength and high energy. It comes from the sun, but also from the phones, laptops, and LED screens we look at every day. Because screen time has become such a big part of daily life, many people are wondering how all that blue light is affecting their eyes.
What Do the Studies Say?
The science on blue light glasses is mixed. Large reviews of existing studies suggest that blue light-blocking lenses probably do little to reduce eye strain from screens. Eye experts also note that there isn't enough strong evidence to recommend them for everyone.
However, blue light does appear to have a real effect on sleep. Your body uses light to set its internal clock, and bright blue light at night can signal to your brain that it's still daytime, making it harder to fall asleep. Blue light has been shown to suppress melatonin, the hormone that helps you feel sleepy, which is why using screens late at night can interfere with your rest.
So while blue light glasses may not cure tired eyes, they might help some people sleep better if worn in the evening.
What Actually Causes Eye Strain?
Digital eye strain is usually not caused by blue light itself. The bigger issue is how we use our screens. When we stare at screens, we tend to blink less, sit too close, use poor lighting, and hold screens at awkward angles.
These habits dry out your eyes and lead to fatigue. No lens can fix those habits on its own. Instead, eye experts recommend following the 20-20-20 rule: every 20 minutes, look at something 20 feet away for 20 seconds. This simple habit gives your eye muscles a chance to relax and can help reduce strain.
Can Nutrients Support Eye-Health?
Two nutrients in particular, lutein and zeaxanthin, are found naturally in the retina and have been studied for their role in filtering high-energy light and supporting long-term eye health. They're found in greens like kale and spinach, and are also available in supplement form. Other nutrients, such as omega-3 fatty acids and vitamin C, are associated with reducing inflammation and supporting the tear film that keeps eyes comfortable.
This kind of nutritional approach addresses the eye's biological needs, which glasses cannot do.
The Bottom Line
Blue light glasses may help with sleep if worn before bed, but the science does not support them as a fix for digital eye strain. For that, good habits, regular breaks, proper screen setup, and blinking more are what actually work.
Now that you know the truth about blue light glasses, you might also want to look into supplements that could help support your eyes from the inside.* The Eye-Mazen gummies from Zen Nutrients combine 10 eye-health ingredients to help your eyes feel their best, even after a long day in front of screens.* Learn more about The Eye-Mazen gummies from Zen Nutrients today.
Authors: Janvi Shah, Devan Patel, PharmD Edited by: Jill Barat, PharmD
*These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.
References:
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https://www.health.harvard.edu/blog/can-blue-light-blocking-glasses-improve-your-sleep-202110262625
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https://www.aao.org/eye-health/tips-prevention/are-computer-glasses-worth-it
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https://www.goodrx.com/health-topic/eye/blue-light-glasses-benefits
